Siemens SITRANS FUS1020, Manual, Page: 84 / 251

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1020NFM-1D Section 3
3.6.3 REFLECT MODE WITH SPACER BAR ONLY
The spacer bar eliminates manual spacing measurements and provides rigidity for mounting the trans-
ducers while maintaining axial alignment.
Apply a continuous 1/8-inch bead of coupling compound to the center of the face of a transducer,
then slide it into the mounting frame but holding it away from making contact with the pipe until it
butts up against the stop (to keep from smearing couplant where it’s not needed); then push down
onto the pipe. Tighten the transducer clamping screw to hold the transducer firmly in place. Repeat
for the other transducer.
6. Observing the upstream to downstream orientation, attach the UP and DN cables to the transduc-
ers. Attach the other ends to the flowmeter’s UP and DN terminals. See Engineering Drawing
1020-7.
7. You can now press <ENTER> to finish the transducer install routine. The available Mounting Strap
kits are listed below. Each kit comes with up to two band sizes to cover its designated pipe diam-
eter range and a spacing guide for Direct Mount.
Strap Mounting Kit P/N Pipe Diameter Band Sizes (Qty.)
1012MS-1A 2" (50.8mm) to 7" #88 (2) #128 (2)
(177.8mm)
1012MS-1 2" (50.8mm) to 13" #88 (2) #152 (2)
(330.2mm)
1012MS-2 13" (330.2mm) to 24" #188 (2) #280 (2)
(609.6mm)
1012MS-3 24" (609.6mm) to 48" #152 (2)
(1219.2mm)
1. Perform all required menu steps until the flow computer issues the number index and prompts you
to press <ENTER> to finish the transducer install routine. Stop at this point.
Note the number index value displayed in the Pick/Install menu. You will use this index to properly
space the transducers. Check to ensure that you have a matched set of transducers. They both
should have the same S/N number but marked with either an “A” or “B” (e.g., 100A and 100B).
1011 Series
Transducer
Spacer Bar
Spring Clip
Spacer Bar Reference
Index Securing Screw
INSTALLATION - REFLECT MOUNT WITH TRANSDUCERS AND SPACING BAR
Mounting
Strap
Spacer Bar
Number Index
Securing Screw
1011 Series
Transducer
Spacer Bar
Spring Clip
Spacer Bar
Number Index
Securing Screw
Mounting
Strap
Spacer Bar
Reference
Index Securing
Screw